Finding the Third Proportional to 5,390,138 and 8,076,903

Step by Step Solution

1. Step 1: Write the proportion equation
   5,390,138 : 8,076,903 = 8,076,903 : x
2. Step 2: Convert to fraction form
   5,390,138/8,076,903 = 8,076,903/x
3. Step 3: Cross multiply
   5,390,138x = 8,076,903 × 8,076,903
4. Step 4: Simplify right side
   5,390,138x = 65,236,362,071,409
5. Step 5: Solve for x
   x = 65,236,362,071,409/5,390,138
6. Step 6: Final answer
   x = 12,102,911.29